Official Cricket MMS Settings
I have a HTC Touch Diamond that was not completely flashed. My MMS were not working but after completing these steps, i had no problems.
HKLM\Software\Arcsoft\Arcsoft MMS UA\Config\MM1 Default Setting Cricket MMS and Change WAP default Port 1&2 to 8080 and WAP Default Time Out to 10000
HKLM\Software\Arcsoft\Arcsoft MMS UA\Config\MM1\MMSCSetting\Cricket MMS Ensure Gateway Port is 8080 ISP is Cricket MMS, MmscURI is set to http://mms.mycricket.com/servlets/mms , Name is Cricket MMS, Ensure the next 4 settings WAP1RecvDefault Size, WAP1Send WAP2 Recv and WAP2 Send are set to 1024000 WAPType to 1 (WAPType to 1 Ensures WAP 2.0)
WspHeader Accept: application/vnd.wap.multipart.related
X-Cricket-MDN this is your 10digit cell number (this might say X-Verizon or X-Sprint Change the value name to X-Cricket-MDN) Value Data 555-555-5555 < of course put in your own phone number no dashes.
Under UI\Domain http://mms.mycricket.com/servlets/mms
Under UI\SizeLimit WAP1RecvLimit 1,2,3 set everything on that page (12 settings in all) 1024000 (this is part of your 1000K send and receive limit)
HKLM /software/arcsoft mms ua/config/UI
find EnableServerEdit and change it from 0 to 1
HKCU\Software\Microsoft\Windows\CurrentVersion\Int ernet Settings Where it says Connections, Delete that entire string Hold down stylus on Connections circle it and delete it, This is what keeps the MMS from sending. Bad thing is every time you open explorer it re-writes this registry. To solve that many of us have just used something else besides Explorer. Like Opera, Firefox Mobile or Skyfire.
You can still use these browsers without writing the Connections Value. If you don’t want to use anything but Explorer, you are going to have to go into this registry file and delete the Connections string every time to send MMS or until someone comes up with a registry hack to Auto delete this value every time you close IE …Close Regedit.
Now go to your messages and click menu/MMS options and then click server and click add new. Add new or if you already have one called something else just click it and click edit…you need to change these settings to
Server Name Cricket
Gateway leave blank
Port Number 8080
Server address http://mms.mycricket.com/servlets/mms
Connect Via Cricket MMS
Sending limit (should be 1024000 if you changed these settings correctly in regedit)
Wap version Wap 2.0 (Wap 2.0 should be pre selected, if it is don’t touch it. If it keeps reverting back to 1.2 when you click close? Go back into regedit and select WapType 1 as mentioned previously, this forces it into WAP 2.0 without it MMS won’t work.) Now if you have more than 1 select the cricket one you just configured and hit set as default then go back to HKLM\Software\Arcsoft\Arcsoft MMS UA\Config\MM1\MMSCSetting\Cricket MMS and delete the other configuration, when you go back into settings CricKet should be the only one there and it should be default.
Start\Settings\Connections\Connections Under the General Tab Enter Cricket. Under the Modem Tab put in Cricket Mobile Web select modem to cellular line. Click next put in #777 to dial to Cricket, click next… User Name: your10digitcellnumber@mycricket.com Password: cricket Domain: Leave Blank, click finish…under proxy settings, check these 2 boxes (this network connects to the internet, and this network uses a proxy server to connect to the internet) Proxy Server: wap.mycricket.com click advanced. The only thing with a value should be HTTP wap.mycricket.com:8080 the rest blank. Click ok and ok again, this ok should bring you back to the connections screen at the bottom click advanced. Click select networks. Under both drop downs select Cricket. Click Ok Go into Exceptions Click add new URL for each of the following settings you are going to need to click add new url again, these don’t all go under one “Add new URL” Block
*mms.mycricket.com/servlets/mms
*.mms.mycricket.com/servlets/mms
*mycricket.com/
*.mycricket.com/
*.mms.mycricket.com/
*mms.mycricket.com/
Then Soft Reset.
Credit: PPCGeeks thread